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Development of Computer Simulation Programs for Road Illuminance With Headlamps 891228

Road visibility is an important problem in traffic safety. We
are developing a computer simulation program to evaluate road
visibility with headlamps for night driving. The simulation program
under development aims to indicate visually the various changes in
visibility.

Road visibility changes in a complicated manner due to road
alignment and facilities. This paper presents a computer simulation
program which can express road alignment and road illuminance in
perspective, as the first stage of the project.

The features of the simulation program are that it can set up
road alignment in accordance with a real road, and that it can set
up at any horizontal or vertical alignment and superelevation, and
also that it can deal with the shadow zone where the light of
headlamps is shut off by guard rails and dazzle protection
facilities.